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. 2021 Feb 13;913:1–52. doi: 10.1016/j.physrep.2021.02.001

Fig. 7.

Fig. 7

Total number of authors and citations of the papers in this category on the left. Note that these numbers are estimated from Semantic Scholar. On the right (top) histogram describing the number of countries subject of study in this category. Note how few papers using data from hundreds of countries are not counted in the histogram. On the right (bottom) most represented publication venues of the category.